Car-control device



I June 3, 1924. 1,49 ,097

J. S. M WHIRTER CAR CONTROL DEVICE Fi led Apri125 1921 nwn orieimingvgaa state of mg Patented June 3, 1924.

UNITED orrice."

zroxm s. mownmrm'nor nEw your, a. Y..- ASSIGHOR T NATIONAL r-zrmuano, com

em, or new 'YORK, "N. 2.. 4 conrom'non or wns'r vmcmm i 7 cmom 'mmn Z'o al l'ichomit my comm:- i

Be .it known that I. J 02m 'S.' 1lIoWma'rnR, at p ork, 5.. l1' ave,madea certain new and useful Inv.cn-,

la citizen'of the nUnitedstates. residin following ,is aspecification.

. tion'in Car-Control-Devices, O fhi'hlidh .the

I actuat ng pedal. or '1no vi ng part with the 60 brakes or the pnetiiiiatic briik Valve so This invention relates to.carfcontrol de vie-e and particularly' cars driven by eIcc-, 10'tricp0wer. The, object of the. invention is to pro ,vide. car control devices which are. simple .in structure, economicalof mannfucture,-1n-

stallation and maintenance, and exceedingly eliicient in operation.

. Aifurther object ofth'e invention is to provide means in a street or elevated car.

whereby the motive power, and the open- :ing and closing movements "of the doors are simultaneously controlled from a single -controlstation..'

, .A further object of the invention is to provide in what is known as a one man ca means associated with the motivecomtroller for controlling the opening and closing movements-of the door.

A further object of the invention is to provide-in a s vstcm of the character described means for preventing motive power from being; supplied to the car motor when any door on'thc car is open and to prevent any doorv from being openhrhen the power is on. i

Further objects of the invention will appear more fully hereinafter.

4 The invention consists substantially in the construction. combination. location. and relative arrangement ofparts, and circuits employed in connection therewith. all as will be hereinafter set forth. as shown by .the :u-conmanying drawings. and finally pointed out in the appended claims. I

Referring to tho drawing: 1' bare shown diagrammatically. an electric control-system cmlmdying my invention. I

ln'tho present street car art the so-callod one man cars are being extensively adopted lwcause they are cflicicnt and more economical In operate than the two man cars where both a motornlan anda conductor are rcquircd. In tho one man car lllf' lllfiltll'lllfln actsas the conductor in addil ion to bisdutios in controlling the movements of the car. It.

has nd that the control of the move alents of the;ca1" ;and'. of the .6811; brakes 55 can The simultaneously controlled," by: a foot pedal. or. any other amiablesiii1e;;morab1e= P .hi re tl-a'l ll' y the .maw m and it. 18 known in the art to} 'the applied. andvice emgw provide a; neutral ma'n is located at the frontcnd of the car naturally, 1t-has,been.the practice "in one man controlled cars to use only the front door for taking on or discharging passengers, and in this typeofcar pneumatic motors are practically universally used for actuating the door. My present invention has for one of its objects to provide in a system of door ,control meansfor reventing the car door frolnheing 'opene at anytime while the car is in motion.

In the one. man control cartheusual controllcris not employed as'the only equi ment. .On the car is what is termed t e reversing cylinder by which the carcan be made to travel forwards or backwards, the 90 usual controller being replaced by an automatic accelerator which upon completion of its controlling circuit starts the car from standstill and inc rcases its speed automatically from zero to maximum unless the clrone is located at each end of the car,

for the only when the bridging device 28 is bridgpurposei of illustration Lhayemerely shown ing the contacts 27 and 22 3 on ina smuch *ag'sithe circuits-are: th'e sai'ne, the l lirjithe ct r. 1 43 and they are connected'iri parallel so that Es'in'mbei 1'43' n a -dqowuse 5 control of the car operation-maybe-etfected quently displaces the bridging device 28 the connection 1 bylconductor-ilg-tonscontafit ;tl'lBE:c m i, Q 198 f2f2Ti529; 25, as will 'filocated on the reversing cvlinder which is be clearly understood. For controlling the i 'from" either. of .them.:.'-; Current is fed :rfrom'a againstathegaction' of the springs 43 to break normally out of circuitwith the contact 7g 'bridging device 23 I construct the bridge 23v which contact communicates through conin the form of a iston of the fluid pressure [cult terminating in nections 8 and 9 to dodr 'switch" 10;*'e'tc,"-' actuated typew ereby when fluid pressure one door switch being proyi ded for each is admitted through ipe line behind the door in thelc'ar andtheidoor su itch'being istonfiqoihridgex 3 circuit-connection is f rolren betwe'enjl'fflfiand 21,"'an'd 22,124, 14 ground or return; con an 253; To eencrpr the fluid pressure. to "motion in .theiusual ell' known nianherfiand the'pis'ton5(lI*employ'a{- magnet "Also provided-"on the ev sing= cy1iu 1er 2 'yal y'e 31f. Theinagr ietifalve ean' be actuated are normally open contacts'16and' 1l; con in two manners,'?ar id upon actuationthereof, tactj16 is in connection througli cohductor the bridge 23' is'ioutsrconmcrwuh contacts 2;) misusingsemenuser and the" o'on"21"at ijd"2 The "actuationan one instance tlqng a i a the motorman n any suitable manner,- for 'b city to again "establish circuit bridges'the contacts 6 and 7 as communication with position, that is; when 25' reversing ylinder is in its power"lorw illdfestablisheslcifciiit'connectionbetween conthe control handlels' -itact's 6and"7 cprrentis supplied from the thrown in its forward 'positionfs'othatuponfcojinection 1',"coiitacfi{l5;"bridg 12, contact actuation of other ope a ing i nfl the 7, line's'8' and assig s-e1 and ground '25. car will travel torward". Th f iiC 1 nlVhen the magnet is energized, as above exectio'n is inailitaind b t 1 lained,fluid prssurdpassesthrough pipe and 1 7 as long as the contr jlf andl q ine 30, behind piston to break the circuit the reversing-cylinder is in it'sforward- 1051- b tw crintgeiggl 3 1K122 A oon th A bndging cdntact '12 n y jmagnet 131' is .deenergized the piston 50falls example, by mains i l P d 11 nection by means of bridging device23-be- I when pre e tween 21and 22 .5 The second means is imposed upon 'tllep'edal'll- 2 m for 'securin the ,'energization'of the magnet is in communlc t o r gh y t pe "valve 31'is means of a circuit 'passin ush but-10112 to c n ac 2 Whwh' 5 throu 'hthe car motor '5fito contacts -57 and adapted to beplaced in electrical oommllnl- 58, wliich are bridged byflbridge 59, when a cation with 0 11mm 2 h l g g m magnet 60, which will be' described 'later, is 23 hereinafter to be describe and contact *d i d, d f m line 61m the magnet '22 i connected ug 11119- 24 magnet "valve; The magnet receives current from valvelll and ground -9 the Jim; 8 when-the brid 'ngdevice 124s ductor 8 connects resistance 26, contacts 27' e -ag d b ih f t' peda li f example,

d 29, bridging device 28 be more f thereby establishing er-ma connection bedescllbed heremaftel'la closmg magnetralve tween contacts 6 and 7, which current passes to ground .Magnet s '14 15 to ground or return 25. From the foregoing control a pneumatic motor 13 for actuating: d b i ti th tio gft1' t will the door and to open and close the'same' in b apparent Assume 11, 1; th i t a the usual well known mannernvhidu motor 't d tiu' ith th l -id -i d i 12- t is of the usual well known construction, its of tact with the termi'na s 6 and 7, that details of construction' being so well known is,'the cal-"accelerator is receiving no ou in the art as totr'equiremere diagrammatic rent, but'thc controller handle remains in I illustration, and it is sufii'cient to statefthat its 'forward'position; thus establishing cirthe motor is operated to close the door when cuit connectionbetween contacts 16 and 17 magnet valve"15 is energized-and to open" as above "described, upon closing button the door when the magnet valve 14 is ener switch '20'and when magnet 31 is dc-encrgizesl. T he bridging devitze'QS consists of n gized current flows from line connection 1, plunger 40 mountediin a'collar 41 to coact line 18, contacts 16- and'17, resistance 19, with a spring 43 supported against a stabutton switch 2(Lthrough contact 21,'bridgtionary block 42 through which rod 40 slides ing'device 23, contact 22, line 24. and opens and normally tends to keep the bridging the magnet valve 14 to current, thus enerportion 28 in contact with'the contacts 27 izing the door motor to open the door. and 29. When the door completes its closhe closing magnet 15 may then at any time ing movement, however. through encrgirfizu beenergized' in the usual well known mantion of the magnet 15, which can be secured nor to close the'door. It will be noticed,

eachotl'i l" .wli li' h to line 8, and when the bridging device 12- ny protuberance however, that-the door cannot be closed until --athe bridging device 12 "establishes circuit 10, however,"'bei -acoelerator'-(not 'ceives' -no"'curren t lo though the -'bridging device 12-establi'shes circu t-connection between contacts 6 and '4' v until all of-the door-switches '10 are closed," and as the door" switches 10 do not becomeclosed until '-'the doors themselves are com- *pletely closed even connection between contact's 6 and 7, that is, (until the motorman' actuation to propel the has made the necessary 'The'door switches *in circuit with the usual sfhown), the accelerator refifrom the source even the menner-sta'ted above;

thoughthe only nieans within the power 'tuated to normally cause th -car to travel forwardly;-the car cannot receive power until allofthe doors are c prevent waste of the current-through :thew

:dooractuat closing magnet the door'or "in arm 43' of the motor, 13 when reaching its spring: 43 to establish circuit against the actionof sprin readily understood that w .magnet 14 is again energized so that the- ;door recedes from its closed propelling theilimit of its movement en ages .the rod andpushes bridging mem n28 out of 'circuital =contact with contacts 27 and 29 en :the openin sition the drawn by bridging member 28 will a ainhconnection between contacts 27 and 29. -The .car now being in motion, it is -appa'rent'.,that'even though contacts 16 and 17 are bridged bv -d the reversing cylinder, current'is' supplied from the line 3, through contact 6, bridge- 12, contact 7, line 8, l1ne'5, throughmagnet valve 31 to ground, thus allowing-fluid pressure frompipe line out of circuital position relative to the contacts 21 and 22. Thus while the car is being propelled under -its ownpower, -eventhough the push button switch 20 is closed, the circuit of .the

opening magnet valve 14,

is broken at the contacts'2l and 22. :;-Like-;;: .fact that from the -line 8 wise,due to the current is being supplied throughnmagnet 60 the circuit of the tacts 57 and 58 to prevent short-circuiting Assume, however, the t condition moving under itsown momentum,

ceiving power from the mains, but due to its movement is setting up a. counter E. M. F., as is termed in theart, and as is well understood, from the motor 56 to contact.

57. and as power is off, that is,,bridging member 12 IS out of circuital arrangement with contacts 6 and 7. andconsequently magnet 60 is deenergized and the bridging;

'member 59 establishes electrical connection by means of bridging member.59 between contacts 57,58, line 61, to magnetvzilve 31,-:

have provided a simp e *ease I of 'emergency,

osed: I Totail will readily-occur to'th'ose s 43." -Itwill be.

g scope of" my. mrent on-ns define -clanns, therefore wha't I'elaim-as new and i useful and 30 toget behind thev piston 50 and force the bridging member 23 trolled "devices motor 56 is broken at-con-H- rombination but with power ofi', the motor 56 is not, re-.-

back to the opposite"ten'ninal 'of the motor,

thus' energihing megrit falvei31 and allowing fiu'id; pressure I to geb' behind f the piston and 22,15 above-explained.

From the foregoin it- -w-ill be seen that l and efficient arrangement -ator nniking one' 'm'an 'car absolutely safe-so far as w dow-control mechanism is concerned.

l f "desired, :-indas shown, means" may be" "employed '--for eliminating pneumatic motbr -control' o'f the 'doors in aud torthis purpose I imv'e'shown n'th way valve-of the usual construction,= i llu'strated ati for control of the motorman 1s ac -'1n'the'icar"'at'any convenient position to l shut off the supply for fluid pressure-16o the motor '13 and-exhaust-the same "to atr 3 any modifications-'andwhan' es inde ki led in the art without departing 1 from the spirit a nd in the "0f my own'ji-nvention and desire to secureby-Letters-Patent;'is; 1-'

1: '1. In an electrically-controlled car, and in combination with :a "manually" controlled power circuit and a fluid our operating motor, an elect-ric'ally controlled devices for controllin theopening and closing movements-of sai motor; of'circuits for controlling said devices, and means for closing the c-ir device whensaidpower circuit is closed.

2. In an electrically controlled car, and in combination with a manually controlled poweFcircnit-and -a fluid pre'ssure'actuated doorg'operating-motor, and ielectrica'lly confor controlling the opening and closing-movements of said motor. of cir cuits for controlling-said devices, and means :for closing.. the circuit of said'door closing device when said power circuit is closed, an meansfor opcmng'the circuit ()f'snKi'dnor closing device when.saidmoton-rcm-hes the limit of. its closing movement.- that 18. its third possible.

icully controlled cmmund in with a .munuallya controlled power circuit and :rflmd-pressure"actuated .3. In 1m clectr -i(lm)r"npt!lali;ng motor.=-and electrically controller]. devil-es for'controlling the opening and closing movements of said moto'r, of en'- cuns forcontrolllngsaid devlces'nnd electronlnguctic means for umintaining thecircuit 'of said (looropcning. device open: when so id power circuit is" closed.

4. In an elerrrurally controlled car; and in combination with a manually controlled power circuit and, n fluid. pressure actuated dooroperuting motor, and electrically conressure actuatedunit of said door closing cu'its for controlling saiddevices, and electro --trolled devices foreontrollingthe opening and closing movements of said motor, of

trolled devices for, controlling the opening circuit, and means for=operating saideswitch and closing movements of said motor, of cirto open, and; maintain the samegopen when th i B motion ,forlmaintaining the circuit 41O In fiI 1i e1wtri mm ma o tw t mK p tin mot r, v y V p of electricatmeans for-controlling; reopen- Inlan electrically controlled car, and ingv niovementaofisaid motor mcircuit, for in combination with a manually controlled controlling flidi'plectrical mean s,;gar; normagnetic means of said door openingdevlce opengwhen the car is in motion. 7

- power circuit and a. fluid pressureactuated ,mally,mp6 !-1imjmllally operated,switchdor door operating motor,',an electrically icon: {controlling sa1d;}c1rcu1t,;-an autom atically aoppr tedetsiri cl ealsog controllingi di'cir- ,cir- Ol11tfi'flq: power ;c1-1-cuit,-iand meansI cuits -for controlling said-devices; and elec-;

tro-ma'gnetic means for maintainingthe cir-;-

cuit of said door opening device-openwhen' atinga sa idc autornatic,.-switch opem and :mmntain-nthevsame;topenrgwl enrtcument is ,tfiowmgqthrouglnsaid power c1rcuit br -.-when said power circuit 18 closed on when the car ,-the camisiinzunotiona amulet; enisac-ea n switch for also rontjrollingisaid circuit, anmally-iop'en is in niotion. v a 1 6. In 'an electricallydriven car-, combination with" a reversing cylinder, of; a ower circuit controlled therebygea; menu-i1 ail; operated switch and a door operatedi'.

11.;- Inn-cam! electrically-intimated hoar kt-b6 and in combinationi n'ithaaadoon operatih emotor,

offelectrical means for controlling t IBOPGH- ingnnonemontsnot saidimotoma circuitqfor icontrollings saidn elctricalimneansyi an inorzmanuallysoperated SKVllZOlUifOI trical device for. controllm the-.jclosing movements of said motor, an a circuit for controlling said devioe and means whereby when sai manually operated, switch is closed the circuit of said device, iscompleted I tor, an electrical device-for controlling the closing movements of said motor, and a circuit for controlling said device, and means whereby when said manually operated switchis closed the circuit of said device is completed to actuate said motor to close the car doors and said door switches, and means .for opening the circuit of said device when the motor completes its closing movement.

8. In an electrically operated car, the combination with a door operatin motor, of electrical means tor'controllingte opening movements of said motor, a circuit for controlling said electrical means, a. nor mally open manually operated switch for controlling said circuit, an automatically operated switch also controlling said circuit, a power circuit, and means for operating said automatic switch to open and maintain the same open when current is flowing throu h said ower circuit.

9. In an e ect-ricaly operated car, the combination with a door opera-ting motor, .of electrical means for controlling the opening movements of saidmotor, a circuit for controlling said electrical means, it normally open manually operated switch for controlling said circuit, an electro-magnetically operated switch alsocontrolling said iven car, the combi actuated a switch cdntrolling isaid -acircuit, an electrically "operated-waive Efor controlling the fluidpressureto-said fluid pressure actuatedrswitch, uwherehywhen" said valve is energized salidnswitch is open, a. power-circuit, a'nd'means for-energizi "said valve wheniisaid power cirouit'isnd V 11- '12. t In? an r electrically (operated? car, {the combinaltibniwitha 'doort-opeiati motor, of electrical means .for controlling t e op'en ingr movements scene motor,- a circuit for controllingsaid ,electrical means,=* si -nor: mally openr manually operatedswitch for controlling said I circuit, a fluid pressure actuated switch :also A cont-rolling said='circuit, 'an electrically operated valve" foroontrolling the'fiuid pressure to saidfluidpres: sure actuated :switch," whereby when said valve is energized said switch is openf-and means for energizing said. valve when; the car is inmotionn 13. In' an' electrically opera-ted car, the combination with a dooroperatin motor, of electricalm'eans for-controllingt- 0 opening movements of-said motor, acirciiit for controlling said electrical meansg a normally open manually operated switch' for controlling "said circuit, a fluidpressure actuated iswitch alsocontrolling saidcir- "combination with a dooropera-ting motor, .of electrical means for controlling-the opening movements of said motor, a circuit for controlling said electrical means, a normally open manuallyoperated switch for tfortopercontrolling said circuit, a. fluid pressure actuated switch also controlling said circuit, an electrically operated valve for controlling the fluid pressure to said fluid pressure actuated switch whereby when said valve is energized said switch is open, a power circuit controllin said valve, an auxiliary circuit for sai valve including the car motor, and means for maintaining said auxiliary circuit open when current is flowing through the wer circuit.

15. In an electrica ly operated car, the combination with a door operatin motor, of electrical means for controlling te opening movements ofsaid motor, a. circuit for controlling said electrical means, a normally open manually operated switch for controlling said circuit, a fluid ressure actuated switch also controlling sai circuit, an electrically operated valve for controlling the fluid pressure to said fluid ressure actuated switch, whereby when said valve is energized said switch is open, a power circuit controlling said valve, an auxiliary circuit for said valve including the car motor, and means for maintaining said auxiliary circuit closed when no current is flowing through said power circuit.

In testimony whereof I have hereunto set my hand on this 13th day of April A.

JOHN s. MOWHIRTER. 

